LONDON (Reuters) - British Airways owner IAG said on Thursday that it had taken a hit from industrial action from pilots at the airline, knocking profits in its third quarter.IAG posted third quarter operating profit of 1.4 billion euros (1.21 billion pounds), in line with analyst consensus, and said that it expects its 2019 operating profit before exceptional items to be 215 million euros lower than 2018, reiterating a September profit warning.The group said that the action by pilots at BA,..